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THE LIMITS OF COOPERATION: BRAZIL AND THE G-20 IN THE WORLD TRADE ORGANIZATION ...
ANA CAROLINA AREIAS F DA SILVAEsta dissertação analisa a participação brasileira no G-20, uma coalizão de países em desenvolvimento (PEDs) criada pelo Brasil e a Índia durante a reunião Ministerial da Organização Mundial de Comércio (OMC), em Cancún, no México, em 2003. A coalizão tinha o objetivo de avançar a agenda de liberalização agrícola na Rodada Doha. Na época, analistas de política comercial se mostraram céticos sobre as chances de ...
The condensation of salicylaldehydes and malononitrile revisited : synthesis of...
Costa, Marta Sílvia Freitas da; Areias, F.; Abrunhosa, Luís; Venâncio, Armando; Proença, M. Fernanda R. P.The reaction of salicylic aldehydes with malononitrile was reinvestigated, and the reaction pathway was followed by 1H NMR spectroscopy. A delicate control of the experimental conditions allowed the synthesis of 2-imino-2H-chromene-3-carbonitriles 1, (2-amino-3-cyano-4H-chromen-4-yl)malononitriles 2, 4-amino-5-imino-2,7-dimethoxy-5H-chromeno[3,4-c]pyridine-1-carbonitrile 12, and (4,5-diamino-1-cyano-1,10b-dihyd...
Antifungal activity of a novel chromene dimer
Abrunhosa, Luís; Costa, M.; Areias, F.; Venâncio, Armando; Proença, M. Fernanda R. P.The activity on Aspergillus spp. growth and on ochratoxin A production of two novel chromene dimers (3) was evaluated. The results of the bioassays indicate that the chromene dimer 3a inhibited mycelia growth by approximately 50% (EC50) at 140.1 μmol L−1 for A. niger, 384.2 μmol L−1 for A. carbonarius, 69.1 μmol L−1 for A. alliaceus and 559.1 μmol L−1 for A. ochraceus. When applied at concentrations of 2 mmol L...
Novos compostos heterocíclicos de azoto com unidades fenólicas : síntese e acti...
Areias, F.Neste trabalho foi feita a síntese e caracterização de novos compostos que resultaram da combinação de unidades fenólicas com moléculas orgânicas, lineares ou cíclicas, contendo sobretudo átomos de azoto. A reacção de diaminomaleonitrilo com aldeídos fenólicos permitiu gerar as iminas correspondentes que, na presença de dióxido de manganês ciclizaram para gerar 4,5-diciano-2-hidroxifenil-1H-imidazoles. Foram p...
Oxidative stress protection by newly synthesized nitrogen compounds with pharma...
Silva, João P.; Areias, F.; Proença, M. Fernanda R. P.; Coutinho, O. P.In this study we used new nitrogen compounds obtained by organic synthesis whose structure predicted an antioxidant potential and then an eventual development as molecules of pharmacological interest in diseases involving oxidative stress. The compounds, identified as FMA4, FMA5, FMA7 and FMA8 differ in the presence of hydroxyl groups located in the C-3 and/or C-4 position of a phenolic unit, which is possibly ...
New synthetic compounds as inhibitors of mycotoxin synthesis
Abrunhosa, Luís; Zaki, M.; Areias, F.; Proença, M. Fernanda R. P.; Venâncio, ArmandoOchratoxin A (OTA) is a mycotoxin produced by some Aspergillus and Penicillium species which is often detected in beer, cereals, coffee, feeds, figs, sultanas and wine. Some fungicides have been found to be effective in preventing fungal growth, but, in other cases, an increase in the synthesis of mycotoxins was reported. Also, the pressure to use less harmful compounds to the environment stimulates the explora...
Characterization of seven medicinal species by the phenolic constituents of the...
Valentão, P.; Areias, F.; Amaral, J.S.; Andrade, P.B.As a part & a project intitled “Technologies for the valorisation of medicinal plants from Entre Douro e Minho region” which was one of its aims the cultivation of species of high and constant quality, we are developing technologies for quality control applied to the species involved. As a first approach, and in order to know what kind of compounds were present, the methanolic extracts were subjected to alkalin...
Ventilação Mecânica próximo dos Grandes Centros: Experiência de uma Unidade de...
Vale, P; Guerreiro, R; Luiz, P; Gonçalves, G; Areias, F; Nunes, A; Mocho, A; Garcia, P; Berdeja, A; Avelar, CA retrospective study of the newborns who were submitted to mechanical ventilation at the Neonatal Intermediate Care Unit was made between July 1991 and June 1994. Mechanical ventilation in such a unit should be transitory and not exceed 24 hours. Information concerning pregnancy, labour, neonates, type of ventilation and its problems was gathered. Forty seven neonates were ventilated. The average ventilation t...
Mechanical ventilation near large centers. The experience of a perinatal care u...
Vale, P; Serviço de Pediatria, Hospital Reynaldo dos Santos, Vila Franca de Xira.; Guerreiro, R; Luiz, P; Gonçalves, G; Areias, F; Nunes, A; Mocho, AA retrospective study of the newborns who were submitted to mechanical ventilation at the Neonatal Intermediate Care Unit was made between July 1991 and June 1994. Mechanical ventilation in such a unit should be transitory and not exceed 24 hours. Information concerning pregnancy, labour, neonates, type of ventilation and its problems was gathered. Forty seven neonates were ventilated. The average ventilation t...
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